Fredeeick william schnautz



UNITE STATES PAT ENT ()EFIoE.

GRATE BAR.

Be it known that I, BDBIoK vVILLIAM SoENAUTZ, of NeW York oity, New York, have invonted an I1proved (rate-Br, of Whiob the folloWing is a Speoifioofion.

ThiS invention TelateS to a grato br Whioh is of sooh oonfiguration aS to draw the air up vvard from the ash pit throu h the re in a.n effeotive nanner to inofeaSe the oo1bus tion, Whioh iS alSo so oonStrnotod aS to )erI1it of the inevitablo nnequal oxpansion and oon traotion of its parts vvithout distortion ariS- ing fherefrom, and the severaw1 parts of Which oaI1 be Teadi arrangedin position,and When in poSition Wi11 not be eaSil aooidentaHy diS plaoed thefoffom.

In the aoooInpanying dravingS=Eignre 1 is a top plan viovv of Iny iLnproved grte br. 1 ig. 2 is a longitudinal Seotion on the line 2, 2,ig. 1, and ig. 3 is a ofoss Seotion on tho line 3, 3, Eig. 2.

My improvod grate baJI' oompriSeS 1OWef supporting Seotion z, and npper ten1ovablo g1'ato SeotionS B, B. The 10Wer Seotion oon- SistS of side plateS o& oonneofed by the veftioa1 bars o at the ends by Whioh the support ing Seotfon is hung i11 tho furnaoe in the usual n1annor. Internlediate of theSo, the

Bide plates o aro oonneoted by the TibS o vv11ioh extend nSh With tho top of tho Side platos and have an upper vertioa1 portion ofDd aJ lowol oblique poftion o inolining doWnvvrd1y toWard tho fire door. 1ajoh fib o, i1- oluding both poftionS,inofeaBos in thiokneSS f1'o1]1 tho botto11 upvvard, as is oustolIlary in the adft.

The nppef gfate Seobions B B aro of a Suitable nun1bef aooofding to the depth of the furnaoo, and oonsiSt of longitdina1 side-barS e Whioh ToSt opon the top of the sido plateS o,

aJnd oonneoting tranSverSe barS at the ondS of the grate SeotionS B. The spaoe betWeen the Side baS e is divided i11to S1otS by barS 9 1ying paralle1 vvith the baJrB 6.

The nppeT grate sootionS B are provided With overhan in and doWnWardl extendin lugS vvhioh over1aJp the side p1ateS`C, and retain tho uppor grate seotions in poSition.

fS the npper and lower grato SeotionS aaro IIovable independently of eaoh other, the un equal expanSion, in dierent direotions, of

thoSo seotions iS in no way opposed, ondSo no diStortion resoltS fronl tho ohangeS of tetnperature to Whioh the grate-bafis Subieotod. ffofeoveI' the I1 )peI grte Seotions oan be vefy eaSily removed for the pnrpoSe of oleaJfling, aand ao aS readily replaoed in their pfopor position,and, Whon 80 Tep1aoed,aronotHblo fo be disarranged by acoidont.

The oombination of upper and 1ovver grote Beotions, the lowor oonsisting of Sido plates joined at suitoble intervalS by drafD-induoing tranSverSo fibs having thoir loWeI' sI1rfaloo iI1- oline(l forvvafdly, and the upper 11a,ving ribs aJt right angleS to the tranSverso fibS of the loWer seotion, fofn1ing longitudina1 slots, and havin side lu s extendin doWnWard ontside the loWer Sootion,Whereby the upper sootio11, While oapablo of Sliding freoly from end to end T1pon the10vver,iS reStfained ff()n1 1ater1 n1oven1ont theroffon, SubStantiany as do Sofibedl 

